APPENDIX B
AT Commands
In addition to the
All AT command strings, with the exception of the break sequence (“+++”) and the repeat com- mand (“A/”), must be terminated with the command line termination character, defined in S3 (default is CR). All characters before 'AT' are ignored. Unsupported commands are ignored and generate an “OK” result code. Multiple commands may be combined on a single line, however the AT command string is currently limited to 40 characters.
Example: AT&FE0V0
Command | Function | Response |
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/ | Repeat last command | Varies |
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| Note: Command executes upon “/” character, |
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| CR not needed. |
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<blank> | Attention | OK(0) |
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A | Answer | OK(0), NO CARRIER(3) |
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D | Dial | CONNECT(1), NO CARRIER(3) |
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| If suffixed with “;” character, will return to com- |
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| mand mode upon connection. |
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En | Echo Mode | OK(0) |
| 0=Turn command echo off |
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| 1=Turn command echo on (default) |
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Hn | OK(0) | |
| Optional argument has no function |
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In | Information | Varies |
| 0=Serial Port Speed | Actual value equals current port speed |
| 3= Model and Version | NDS/5102 (2 Port, |
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O | Return to data mode from command |
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| mode |
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Qn | Result Codes |
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| 0=Enable result codes (default) | OK(0) |
| 1=Supress result codes | <blank> |
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Host | 40 |